From 166571566a9e42ffd175fea2164c16977e58511f Mon Sep 17 00:00:00 2001
From: vicrodh <103399283+vicrodh@users.noreply.github.com>
Date: Tue, 13 Jan 2026 08:38:24 -0600
Subject: [PATCH] perf(rodio): set fixed ALSA buffer size on linux

---
 src-tauri/vendor/rodio/src/stream.rs | 36 +++++++++++++++++++---------
 1 file changed, 25 insertions(+), 11 deletions(-)

diff --git a/src-tauri/vendor/rodio/src/stream.rs b/src-tauri/vendor/rodio/src/stream.rs
index f4dfc35cf..ba3dfa5c3 100644
--- a/src-tauri/vendor/rodio/src/stream.rs
+++ b/src-tauri/vendor/rodio/src/stream.rs
@@ -7,7 +7,7 @@ use crate::dynamic_mixer::{self, DynamicMixerController};
 use crate::sink::Sink;
 use crate::source::Source;
 use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
-use cpal::{Sample, SupportedStreamConfig};
+use cpal::{BufferSize, Sample, SupportedBufferSize, SupportedStreamConfig};
 
 /// `cpal::Stream` container. Also see the more useful `OutputStreamHandle`.
 ///
@@ -210,9 +210,23 @@ impl CpalDeviceExt for cpal::Device {
 
         let error_callback = |err| eprintln!("an error occurred on output stream: {}", err);
 
+        let mut config = format.config();
+        #[cfg(target_os = "linux")]
+        {
+            if let SupportedBufferSize::Range { min, max } = *format.buffer_size() {
+                // Aim for ~400ms buffer to reduce wakeups during music playback.
+                let target_frames =
+                    (config.sample_rate.0 as u64).saturating_mul(2).saturating_div(5);
+                let clamped = target_frames
+                    .clamp(min as u64, max as u64)
+                    .min(u32::MAX as u64) as u32;
+                config.buffer_size = BufferSize::Fixed(clamped);
+            }
+        }
+
         match format.sample_format() {
             cpal::SampleFormat::F32 => self.build_output_stream::<f32, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut()
                         .for_each(|d| *d = mixer_rx.next().unwrap_or(0f32))
@@ -221,7 +235,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::F64 => self.build_output_stream::<f64, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut()
                         .for_each(|d| *d = mixer_rx.next().map(Sample::from_sample).unwrap_or(0f64))
@@ -230,7 +244,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::I8 => self.build_output_stream::<i8, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut()
                         .for_each(|d| *d = mixer_rx.next().map(Sample::from_sample).unwrap_or(0i8))
@@ -239,7 +253,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::I16 => self.build_output_stream::<i16, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut()
                         .for_each(|d| *d = mixer_rx.next().map(Sample::from_sample).unwrap_or(0i16))
@@ -248,7 +262,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::I32 => self.build_output_stream::<i32, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut()
                         .for_each(|d| *d = mixer_rx.next().map(Sample::from_sample).unwrap_or(0i32))
@@ -257,7 +271,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::I64 => self.build_output_stream::<i64, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut()
                         .for_each(|d| *d = mixer_rx.next().map(Sample::from_sample).unwrap_or(0i64))
@@ -266,7 +280,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::U8 => self.build_output_stream::<u8, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut().for_each(|d| {
                         *d = mixer_rx
@@ -279,7 +293,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::U16 => self.build_output_stream::<u16, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut().for_each(|d| {
                         *d = mixer_rx
@@ -292,7 +306,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::U32 => self.build_output_stream::<u32, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut().for_each(|d| {
                         *d = mixer_rx
@@ -305,7 +319,7 @@ impl CpalDeviceExt for cpal::Device {
                 None,
             ),
             cpal::SampleFormat::U64 => self.build_output_stream::<u64, _, _>(
-                &format.config(),
+                &config,
                 move |data, _| {
                     data.iter_mut().for_each(|d| {
                         *d = mixer_rx